Sliding vane compressor with long-distance air suction holes

Abstract

The utility model relates to the technical field of compressors, and particularly discloses a sliding vane compressor with long-distance air suction holes. The motor and the air cylinder are arranged in the machine shell, a compression cavity is formed in the air cylinder, the compression cavity is communicated with an air inlet hole and an air outlet hole, a sliding piece rotor is arranged in the compression cavity and comprises a rotor shaft and two overlapped blades, a sliding groove penetrating through the rotor shaft along the diameter is formed in the rotor shaft, and the blades are arranged in the sliding groove in a sliding mode. The air inlet hole is formed in the side wall of the compression cavity, the side, communicated with the inner wall of the compression cavity, of the air inlet hole is a first air inlet hole, the side, communicated with the outer wall of the compression cavity, of the air inlet hole is a second air inlet hole, the first air inlet hole is in a long strip shape, and the transverse length of the first air inlet hole along the inner wall of the compression cavity is larger than the longitudinal length of the first air inlet hole.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, and specifically discloses a vane compressor with a long-distance air suction hole. Background Art

[0002] A compressor is a machine that compresses low-pressure gas into high-pressure gas, which can provide power for the refrigeration cycle. Its types include screw type, piston type, vane type, etc. Among them, the vane compressor is a rotary variable volume compressor, which compresses the air between the vanes and discharges it by sliding the vanes on the eccentric rotor of the cylindrical cylinder.

[0003] For example, a vane compressor with overlapping blades is described in Chinese patent 202211696005.3, in which the vane rotor includes a rotor shaft and a first blade and a second blade slidably arranged on the rotor shaft. The rotor shaft is provided with a slide groove that runs through the rotor shaft along the diameter. The first blade and the second blade are slidably arranged in the slide groove, and one end of the blade structure includes a supporting portion that fits each other and a hammer head that slides with the inner wall of the cylinder. This type of two-blade overlapping vane compressor has many advantages such as small rotor volume and high compression efficiency.

[0004] However, it was found during current use that the air output and air pressure of the compressor did not meet the design expectations. The main reason was that the width of the air inlet hole accounted for a small proportion of the circumference of the compression chamber side wall, the suction time in a compression cycle was short, and the suction volume was insufficient. Utility Model Content

[0005] The utility model aims to overcome the deficiencies of the prior art and provide a vane compressor with a long-distance air suction hole.

[0006] The utility model discloses a vane compressor with a long-distance air suction hole, which adopts the following technical solution:

[0007] A vane compressor with a long-distance air suction hole comprises: a casing, a motor arranged in the casing, and a cylinder, wherein a compression chamber is arranged in the cylinder, wherein the compression chamber is connected with an air inlet hole and an air exhaust hole, wherein a vane rotor is arranged in the compression chamber, wherein the vane rotor comprises a rotor shaft and two superimposed blades, wherein a slide groove which penetrates the rotor shaft along a diameter is arranged on the rotor shaft, wherein the blade is slidably arranged in the slide groove, wherein the air inlet hole is arranged on the side wall of the compression chamber, wherein a side of the air inlet hole communicating with the inner wall of the compression chamber is a first air inlet hole opening, wherein a side of the air inlet hole communicating with the outer wall of the compression chamber is a second air inlet hole opening, wherein the first air inlet hole opening is in the shape of an elongated strip, and wherein a transverse length of the first air inlet hole along the inner wall of the compression chamber is greater than a longitudinal length of the first air inlet hole opening.

[0008] Preferably, the first air inlet opening is any one of a waist-shaped hole, a rectangular hole, a quasi-rectangular hole, and an elliptical hole transversely arranged on the inner wall of the compression chamber.

[0009] Preferably, the second air inlet opening is circular.

[0010] Preferably, a lateral projection of the first air inlet aperture completely falls within a lateral projection of the second air inlet aperture.

[0011] Preferably, the transverse contact width between the blade and the compression chamber is smaller than the transverse length of the first air inlet opening.

[0012] Preferably, a transverse length of the first air inlet opening along the inner wall of the compression chamber is not longer than 25% of the circumference of the inner wall of the compression chamber.

[0013] Preferably, the cylinder comprises a cylinder body, a cylinder cover arranged at the upper end of the cylinder body and a base arranged at the lower end of the cylinder body, and the air inlet hole is arranged on the side wall of the cylinder body.

[0014] Preferably, the side wall of the casing is connected with an air inlet pipe, and the air inlet pipe is communicated with the air inlet hole; the top of the casing is connected with an exhaust pipe, and the exhaust pipe is communicated with the exhaust hole.

[0015] Compared with the prior art, the utility model has at least the following beneficial effects:

[0016] The utility model designs a side opening that communicates with the inner wall of the compression chamber to be long and narrow. Since the lateral length of the first air inlet opening along the inner wall of the compression chamber is greater than its longitudinal length, the long and narrow first air inlet opening occupies a larger span inside the compression chamber, thereby extending the suction time in a single compression cycle, thereby making the air intake volume in a single compression cycle more sufficient, thereby ensuring the air outlet volume and air outlet pressure of the compressor and improving the gas compression efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the vane compressor with long-distance suction holes of this embodiment;

[0018] Figure 2 It is a schematic diagram of the vane compressor with long-distance air suction holes of this embodiment after the casing is removed;

[0019] Figure 3 It is a schematic diagram of the cylinder structure of the vane compressor with long-distance air intake holes of this embodiment with the cylinder cover removed;

[0020] Figure 4 This is a schematic structural diagram of a cylinder of a vane compressor with a long-distance air intake hole of this embodiment with the cylinder cover removed from another angle;

[0021] Figure 5 This is a cross-sectional view of a cylinder of a sliding vane compressor with a long-distance suction hole according to this embodiment.

[0022] Description of Figure Numbers:

[0023] 1. Casing; 11. Inlet pipe; 12. Exhaust pipe; 2. Cylinder; 21. Cylinder body; 22. Cylinder head; 23. Base; 3. Compression chamber; 31. Inlet hole; 311. First inlet hole; 312. Second inlet hole; 32. Exhaust hole; 4. Blade. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0025] A vane compressor with a long suction hole, referring to Figure 1-5 , which comprises a casing 1, a motor arranged in the casing 1, and a cylinder 2. The cylinder 2 comprises a cylinder body 21, a cylinder head 22 arranged at the upper end of the cylinder body 21, and a base 23 arranged at the lower end of the cylinder body 21. A compression chamber 3 is arranged in the cylinder 2. The compression chamber 3 is connected with an air inlet 31 and an air outlet 32. The air inlet 31 is arranged on the side wall of the cylinder body 21. An air inlet pipe 11 is connected to the side wall of the casing 1. The air inlet pipe 11 is connected to the air inlet 31 of the cylinder body 21. An air outlet pipe 12 is connected to the top of the casing 1. The air outlet pipe 12 is connected to the air outlet 32 ​​of the cylinder body 21. A vane rotor is arranged in the compression chamber 3. The vane rotor comprises a rotor shaft and two superimposed blades 4. A slide groove is arranged on the rotor shaft, which penetrates the rotor shaft along the diameter. The blade 4 is slidably arranged in the slide groove. As the rotor shaft rotates eccentrically in the cylinder, the air chamber volume in the compression chamber 3 changes gradually from large to small, thereby achieving a continuous gas compression function.

[0026] Reference Figure 3-5 The air inlet 31 is located on the side wall of the compression chamber 3. The side of the air inlet 31 communicating with the inner wall of the compression chamber 3 is the first air inlet opening 311, and the side of the air inlet 31 communicating with the outer wall of the compression chamber 3 is the second air inlet opening 312. The first air inlet opening 311 is in a long strip shape, and the transverse length of the first air inlet opening 311 along the inner wall of the compression chamber 3 is greater than the longitudinal length of the first air inlet opening 311. By designing the air inlet 31 as different end openings, the first air inlet opening 311 occupies a larger span inside the compression chamber 3, prolonging the air intake time in a single compression cycle, thereby expanding the air intake volume in a single compression cycle, thereby ensuring the air output volume and air output pressure of the compressor, and improving the compression efficiency.

[0027] Specifically, the first air inlet opening 311 can be any one of a waist-shaped hole, a rectangular hole, a quasi-rectangular hole, and an elliptical hole laterally arranged on the inner wall of the compression chamber 3. The present embodiment preferably uses a waist-shaped hole, which is more convenient to process; while the second air inlet opening 312 is circular. Under the premise of ensuring sealing, the circle is more convenient for the installation of the air inlet pipe 11; the lateral projection of the first air inlet opening 311 is preferably designed to fall completely within the lateral projection of the second air inlet opening 312, which is helpful for the sealing design.

[0028] Specifically, the lateral length of the first air inlet opening 311 is greater than the lateral contact width between the blade 4 and the compression chamber 3. Preferably, the lateral length of the first air inlet opening 311 along the inner wall of the compression chamber 3 is not longer than 25% of the circumference of the inner wall of the compression chamber 3. This ensures that the compression chamber has sufficient air intake in a short period of time, while taking into account the rapid conversion of the compression air chamber, balancing the time of inflation of the compression chamber and compression of the gas, thereby better compressing the gas to achieve an ideal outlet volume and outlet pressure, thereby optimizing the compression efficiency improvement effect.

[0029] The technical solution provided by the utility model is introduced in detail above. Specific examples are used in this article to illustrate the principle and implementation mode of the utility model. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. At the same time, for general technicians in this field, according to the idea of ​​the utility model, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be understood as a limitation on the utility model.

Claims

1. A vane compressor with a long-distance air suction hole, comprising a casing, a motor arranged in the casing, and a cylinder, wherein a compression chamber is arranged in the cylinder, wherein the compression chamber is connected with an air inlet hole and an air discharge hole, wherein a vane rotor is arranged in the compression chamber, wherein the vane rotor comprises a rotor shaft and two superimposed blades, wherein a slide groove is arranged on the rotor shaft and passes through the rotor shaft along a diameter, wherein the blade is slidably arranged in the slide groove, It is characterized in that The air inlet hole is arranged on the side wall of the compression chamber, the side of the air inlet hole communicating with the inner wall of the compression chamber is the first air inlet hole, the side of the air inlet hole communicating with the outer wall of the compression chamber is the second air inlet hole, the first air inlet hole is long and narrow, and the lateral length of the first air inlet hole along the inner wall of the compression chamber is greater than the longitudinal length of the first air inlet hole.

2. The vane compressor with long suction holes according to claim 1, It is characterized in that The first air inlet opening is any one of a waist-shaped hole, a rectangular hole, and an elliptical hole transversely arranged on the inner wall of the compression chamber.

3. The vane compressor with long suction holes according to claim 1, It is characterized in that The second air inlet opening is circular.

4. The vane compressor with long suction holes according to claim 3, It is characterized in that The lateral projection of the first air inlet aperture is completely within the lateral projection of the second air inlet aperture.

5. The vane compressor with long suction holes according to claim 1, It is characterized in that The transverse contact width between the blade and the compression chamber is smaller than the transverse length of the first air inlet opening.

6. The vane compressor with long suction holes according to claim 1, It is characterized in that The transverse length of the first air inlet opening along the inner wall of the compression chamber is no longer than 25% of the circumference of the inner wall of the compression chamber.

7. The sliding vane compressor with long suction holes according to claim 1, It is characterized in that The cylinder comprises a cylinder body, a cylinder cover arranged at the upper end of the cylinder body and a base arranged at the lower end of the cylinder body, and the air inlet hole is arranged on the side wall of the cylinder body.

8. The sliding vane compressor with long suction holes according to claim 7, It is characterized in that The side wall of the casing is connected with an air inlet pipe, and the air inlet pipe is communicated with the air inlet hole; the top of the casing is connected with an exhaust pipe, and the exhaust pipe is communicated with the exhaust hole.

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